Australian Conservatives' founder Cory Bernardi says greater disclosure transparency is needed for parliamentarians.
Senator Bernardi's call comes after Former Liberal minister Bruce Billson (pictured) was censured by Parliament for undeclared payments while he was still a sitting MP.
The ABC reports the retired member for the Victorian seat of Dunkley announced in March 2016 he was taking a job as Franchise Council of Australia (FCA) executive director, but he did not notify the Parliament's register of interests that he had begun receiving a $75,000 salary in the job, months before he was due to retire from his seat.
He also admitted to receiving an undeclared payment from a "friend" through his personal consultancy business while still a member of Parliament.
A parliamentary inquiry into Mr Billson's failure to list the FCA salary on the compulsory register of members' interests handed down its final report this week, recommending he be censured.
The privileges committee stopped short of finding that Mr Billson's conduct amounted to a contempt of Parliament, which can lead to potential penalties of six months in prison or a $5,000 fine.
Senator Bernardi has told Paul Murray Live on Sky News Mr Billson isn't Robinson Crusoe in Australian Parliamentary history:
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